black elk energy, the houston-based company who owns the platform, says 1 of the 22 contractors onboard, improperly used a blowtorch to cut the pipeline igniting the explosion. 11 workers were injured, medevacked to safety. four with severe burns. >> they treat us contractors as part of their family. so, when there's an incident, it hurts. >> reporter: as far as the oil spill, the coast guard says the impact is minimal because the rig was shut down at the time. >> the environmental threat, as we know, there was 20 gallons that potentially were in that 3-inch line, which would equate to approximately 28 gallons of product. >> reporter: not even enough to fill a large suv's gas tank. in comparison, bp's deepwater horizon disaster, 2 1/2 years ago, spilled enough daily to fill the gas tanks of 82,000 suvs. and just a few hours ago, two more boats actually doubled in size arrived on the scene to help with the search. which is a 40-mile, by 35-mile radius around that platform. the weather has been cooperating. there are no storms in sight. so, they do have a clear line of vision. hopefully,